tm1300 NXP Semiconductors, tm1300 Datasheet - Page 476

• Manufacturer Part Number: tm1300
• Description: Tm-1300 Media Processor
• Manufacturer: NXP Semiconductors

TM1300 Data Book
uld16x
SYNTAX
FUNCTION
DESCRIPTION
it to 32 bits, and writes the result in r dest . If the memory address computed by r src1 + 2 r src2 is not a multiple of 2,
the result of
big-endian depending on the current setting of the bytesex bit in the PCSW.
defined only for 32-bit loads and stores.
modification of the destination register and the occurrence of side effects. If the LSB of r guard is 1, r dest is written and
the data cache status bits are updated if the addressed locations are cacheable. if the LSB of r guard is 0, r dest is not
changed and
EXAMPLES
A-190
r10 = 0xd00, r30 = 1, [0xd02] = 0x22,
[0xd03] = 0x11
r50 = 0, r40 = 0xd04, r20 = 0xfffffffe,
[0xd00] = 0x84, [0xd01] = 0x33
r60 = 1, r40 = 0xd04, r20 = 0xfffffffe,
[0xd00] = 0x84, [0xd01] = 0x33
r70 = 0xd01, r30 = 1
The
The result of an access by
The
[ IF r guard ] uld16x r src1 r src2
if r guard then {
}
if PCSW.bytesex = LITTLE_ENDIAN then
else
temp<7:0>
temp<15:8>
r dest
uld16x
uld16x
bs
bs
Initial Values
1
0
zero_ext16to32(temp<15:0>)
uld16x
uld16x
operation loads the 16-bit memory value from the address computed by r src1 + 2 r src2 , zero extends
operation optionally takes a guard, specified in r guard . If a guard is present, its LSB controls the
mem[r src1 + (2
mem[r src1 + (2
is undefined but no exception will be raised. This load operation is performed as little-endian or
has no side effects whatever.
PRODUCT SPECIFICATION
uld16x
r src2 ) + (1
r src2 ) + (0
uld16x r10 r30
IF r50 uld16x r40 r20
IF r60 uld16x r40 r20
uld16x r70 r30
to the MMIO address aperture is undefined; access to the MMIO aperture is
bs)]
bs)]
r dest
Operation
Unsigned 16-bit load with scaled index
r100
r110
r80
r90
r100
no change, since guard is false
r90
r110 undefined (0xd01 + 2 1 is not a multi-
ple of 2)
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
uld16 ild16 uld16d ild16d
0x00008433
0x00002211
uld16r ild16r ild16x
Philips Semiconductors
ATTRIBUTES
SEE ALSO
Result
dmem
199
4, 5
No
—
2
3